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Separate option for enabling fuse syntax for sum, avg, count

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vdimir 2021-11-03 12:23:33 +03:00
parent 1f217aeb5a
commit 08545795b5
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3 changed files with 5 additions and 3 deletions
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4
src/Core/Settings.h
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@ -459,7 +459,8 @@ class IColumn;
M(Bool, allow_non_metadata_alters, true, "Allow to execute alters which affects not only tables metadata, but also data on disk", 0) \
M(Bool, enable_global_with_statement, true, "Propagate WITH statements to UNION queries and all subqueries", 0) \
M(Bool, aggregate_functions_null_for_empty, false, "Rewrite all aggregate functions in a query, adding -OrNull suffix to them", 0) \
M(Bool, optimize_syntax_fuse_functions, false, "Fuse aggregate functions (`sum, avg, count` with identical arguments into one `sumCount`, quantile-family functions with the same argument into `quantiles*(...)[...]`)", 0) \
M(Bool, optimize_syntax_fuse_functions, true, "Allow apply syntax optimisation: fuse aggregate functions", 0) \
M(Bool, optimize_fuse_sum_count_avg, false, "Fuse functions `sum, avg, count` with identical arguments into one `sumCount` (`optimize_syntax_fuse_functions should be enabled)", 0) \
M(Bool, flatten_nested, true, "If true, columns of type Nested will be flatten to separate array columns instead of one array of tuples", 0) \
M(Bool, asterisk_include_materialized_columns, false, "Include MATERIALIZED columns for wildcard query", 0) \
M(Bool, asterisk_include_alias_columns, false, "Include ALIAS columns for wildcard query", 0) \
@ -542,7 +543,6 @@ class IColumn;
M(HandleKafkaErrorMode, handle_kafka_error_mode, HandleKafkaErrorMode::DEFAULT, "Obsolete setting, does nothing.", 0) \
M(Bool, database_replicated_ddl_output, true, "Obsolete setting, does nothing.", 0) \
M(UInt64, replication_alter_columns_timeout, 60, "Obsolete setting, does nothing.", 0) \
M(Bool, optimize_fuse_sum_count_avg, false, "Obsolete, use optimize_syntax_fuse_functions", 0) \
M(UInt64, odbc_max_field_size, 0, "Obsolete setting, does nothing.", 0) \
/** The section above is for obsolete settings. Do not add anything there. */

2
src/Interpreters/TreeRewriter.cpp
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@ -1175,7 +1175,7 @@ void TreeRewriter::normalize(
// if we have at least two different functions. E.g. we will replace sum(x)
// and count(x) with sumCount(x).1 and sumCount(x).2, and sumCount() will
// be calculated only once because of CSE.
if (settings.optimize_fuse_sum_count_avg || settings.optimize_syntax_fuse_functions)
if (settings.optimize_fuse_sum_count_avg && settings.optimize_syntax_fuse_functions)
{
FuseSumCountAggregatesVisitor::Data data;
FuseSumCountAggregatesVisitor(data).visit(query);

2
tests/queries/0_stateless/01744_fuse_sum_count_aggregate.sql
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@ -3,6 +3,8 @@ CREATE TABLE fuse_tbl(a Int8, b Int8) Engine = Log;
INSERT INTO fuse_tbl SELECT number, number + 1 FROM numbers(1, 20);
SET optimize_syntax_fuse_functions = 1;
SET optimize_fuse_sum_count_avg = 1;
SELECT sum(a), sum(b), count(b) from fuse_tbl;
EXPLAIN SYNTAX SELECT sum(a), sum(b), count(b) from fuse_tbl;
SELECT '---------NOT trigger fuse--------';